PROBLEM TO BE SOLVED: To provide a paddy field implement capable of including a groove cutting body in the state where generation of a problem of an influence on a ground float of a muddy flow generated by the groove cutting body or the like can be avoided easily, while the groove cutting body is supported by a paddy field work device.SOLUTION: A groove cutting body 90 includes a groove cutting main body 92 for performing groove cutting action to a field surface, and a land-leveling plate 100 extending laterally outward from the groove cutting main body 92, for performing land-leveling action on the field surface on the lateral side of a drain ditch formed by the groove cutting main body 92. In a self-traveling vehicle body side view, a front end 91f of the groove cutting main body 92 is positioned furthermore on the self-traveling vehicle body front side than a rear end 60r of a material feeder 59, and a front end 100f of the land-leveling plate 100 is positioned furthermore on the self-traveling vehicle body rear side than a rear end 60r of the material feeder 59.COPYRIGHT: (C)2014,JPO&INPIT【課題】溝切り体を水田作業装置に支持させるものでありながら、溝切り体によって発生する泥土流の接地フロートに対する影響などの問題発生を回避し易い状態で溝切り体を備えられる水田作業機を提供する。【解決手段】溝切り体90に、圃場面に溝切り作用する溝切り本体92と、溝切り本体92から横外向きに延出して、溝切り本体92が形成する排水溝の横側で圃場面に整地作用する整地坂100とを備えてある。自走車体側面視において、溝切り本体92の前端91fが資材供給器59の後端60rより自走車体前方側に位置し、整地板100の前端100fが資材供給器59の後端60rより自走車体後方側に位置している。【選択図】図9